Car runs forward but no reverse

SPGHARIPATEL

MEMBER
2007 TOYOTA CAMRY
3.5L
6 CYL
2WD
AUTOMATIC
190,000 MILES

Not sure if it is related but.
1. Radiator was changed by mechanic 2 months ago.
2. There was a slight leak on the transmission cooling hose to radiator.
3. Showed it to mechanic and he tightened the connection of the transmission line entering the radiator.
4. After two weeks I felt an occasional transmission slippage.
5 subsequently an engine check light came on.
6 I took the car to AutoZone and scanner showed P0750 rev solenoid fault.
7 A few days later car stopped going into reverse, going forward seems fine.

3 Replies

JACOBANDNICKOLAS

MECHANIC
108,192 POSTS

Hi,

The code isn't shown for this year and model Toyota. I know that a P0750 is normally related to shift solenoid A in the transmission valve body. Is it possible you got the wrong number?

If it is shift solenoid A, common causes are low transmission fluid, a faulty solenoid, wiring to the solenoid, dirty fluid, and the worst case is a faulty valve body.

Take a look below to see what I mean by the code not being listed.

Since there was a leak, confirm the fluid is clean and full also. Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-and-add-transmission-fluid

Let me know.

Joe

See pic below.

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Wednesday, May 25th, 2022 AT 8:10 PM

SPGHARIPATEL

MEMBER
2 POSTS

Hello Joe,

Thank you for the response. Sorry I gave you the wrong code - I was going from memory and I guess I got confused in my head after reading so many articles on the web.
I found the AutoZone scanner code print out from the day I got the engine check light and I am pasting it below. Also, my car does not have any dip stick for the transmission. Planning to get the transmission fluid changed today.

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Thursday, May 26th, 2022 AT 4:19 AM

JACOBANDNICKOLAS

MECHANIC
108,192 POSTS

Hi,

Checking the fluid is a pain. It requires the transmission to be at operating temperature. Then, the drain plug (with the engine running) is removed and fluid (if full) will drip from the drain. If nothing comes out, it's low.

At that point, you would add fluid until it starts to drip. I attached the directions below along with pics of the fill and drain plug.

Now, I looked through the codes. One that certainly caught my attention is the voltage variations in the battery. This can cause issues. What I would like you to try is to check the alternator output at the battery. It's really simple and only requires a voltmeter or multimeter.

Here is a link that explains how it's done:

https://www.2carpros.com/articles/how-to-check-a-car-alternator

Let me know if you are comfortable doing these two things. If you are, let me know the results.

Take care,

Joe

See pics below.

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